UAG - Issue Joining to an array

Hello,

I have a clean UAG 2010 SP1 Box running 2k8 R2 that I'm trying to join to an array.  The array manager is another box running UAG 2010 SP1 with 2k8 R2.

Every Time I attempt to join to the array, I get an error message, "The server is not operational."

I did tell the array manager that a member will be joining.

Could it be a rule in TMG that is blocking the process?  My UAG/TMG skills are pretty weak.

Thanks.